1883.] MR. F. MOOBK ON LIMNAINA AND EXJPLOLINA. 223 



Genus Radena. 



Radena, Moore, Lep. of Ceylon, i. p. 3 (1880) ; Distant, Rhopal. 

 Malayaiia, p. 9 (1882). 



Danaus (part.), Latreillc, Gen. Crust, et Ins. iv. p. 201 (1809). 



Hestia (part.), Hiibner, Verz. bek. Schn.ett. p. 15 (1816). 



Dnnais (Radetia), Marshall & de Niceville, Butt, of India, 

 Burmah, &c. p. 32 (1882). 



Fore wing moderately long, triangular ; first subcostal branch 

 emitted at about one third before end of ihe cell and anastomosed 

 to the costal in the middle, second branch emitted immediately 

 before end of the cell, third and fourth at equal distances beyond ; 

 discocellulars concave, upper slightly bent before the middle, pro- 

 ducing a very short discoidal spur within the cell from the angle, 

 lower discocellular slender at its upper end ; upper radial from end 

 of cell, in a line with subcostal, lower from the middle ; medians at 

 equal distances apart; subniedian with a short, slender, lower basal 

 veinlet. Hind wing broad, somewhat triangular ; costal margin 

 long, nearly straight, abdominal margin long ; costal vein very 

 convex from the base and then extending straight along edge of the 

 margin ; cell long, broad ; subcostnls and median branches very 

 wide apart. No scent-pouch in male. Antennse longer than in 

 allied genera, and with a more gradually thickened and blunt club. 

 Apical joint of palpi long. 



Larva {B. juventd) with two pairs of fleshy filaments. 



Type R, similis. 



1. Radena similis. 



Pajnlio similis, Linn. Mus. Ulr. p. 299 ; id. Syst. Nat. x. p. 479 

 (1758) ; Clerck, Icones, i. pi. 16. f . 3 (1759) ; Fabr. Eut. Syst. iii. 

 p. 58. 



Danais similis, Butler, Catal. Lep. Fabr. Brit. Mus. p. 6. 



Danais similis, Aurivillius, Kongl. Vet.-Akad. Handl. 1882, 

 p. 100. 



Papilio aventina, Cramer, Pap. Exot. i. pi. 59. f. F (1779). 



Danais aventina, Godt. Enc. Meth. ix. p. 191. 



Danais chinensis, Felder, Verb, zool.-bot. Gesellsch. xii. p. -488 

 (1S62). 



Hab. Hongkong; Formosa. 



2. Radena persimilis. (Plate XXXI. fig. 4.) 

 Danais per similis, Moore, Proc. Zoo). Soc. 1879, p. 136. 

 Hab. Siam (Bankok). In coll. F. Moore. 



3. Radena vulgaris. 



Danais vulf/uris, Butler, Entom. Monthly Mag. xi. p. 164 (1874) 

 Moore, Proc. Zool. Soc. 1878, p. 822. 



Radena vulgaris, Distant, Rhopalocera Malayana, p. 10, pi. I. 

 f. 8 (1882). 



